According to the Anne Frank House's Facebook page, the 19-year-old singer -- who is now on the European leg of his Believe tour and performed in the nearby Dutch city of Arnhem in the Netherlands on Saturday night -- left a message in the museum's guestbook, writing:

"Truly inspiring to be able to come here. Anne was a great girl. Hopefully she would have been a belieber."

The comment stirred up a lot of conversation on social media, with people calling Bieber "a little idiot" who is "way too full of himself."

One Facebook commenter wrote, "Glad he went, but, the last sentence is VERY self serving. He missed the lessons of Anne totally," while another added, "How does he manage to think about his own fame and success attending a historical place of such tragedy and injustice?"

Twitter exploded after the news, as well, with fans and non-followers alike sharing their opinions on Bieber's remarks.

Just when you thought Bieber couldn't do anything worse, he decided to write in the guest book at Anne Frank's house. http://t.co/gj03RzjVS3